The bashful British host of HBO's upcoming series Last Week Tonight admitted that it still feels strange to see himself on newsstands. "That was weird," he said, adding that he's no Jimmy when it comes to mag covers. "You have a face that behooves being on a magazine." (The THR stuff is right around the 2:00 mark below.)

"I had to go to the launch party and they asked what is it like [to be on the cover], and I said, 'It makes me feel nauseous and uncomfortable,'" he said.

"I looked up at the man interviewing me and realized that wasn't the right answer," added Oliver, who then corrected himself, tepidly: "It was a big honor."

Fallon also held up a photo of the former Daily Show comedian at the event -- where he looked just slightly awed by the camera flashes.

Along with the cover of THR, Oliver's face is plastered on billboards across the U.S. ahead of the launch of his HBO show Last Week Tonight and Fallon revealed that some of them already had some unique public artistry added.